Informative, practical, and engaging, this handbook covers how to conduct usability tests of medical devices. Recognizing that the intended readers are busy and disinclined to read lengthy textbooks, this book has been carefully designed to be concise and visual, allowing readers to jump from one section to another as needed. The book provides a general understanding of usability testing and reviews key concepts. It highlights the challenges of validating that protects against dangerous errors that could lead to patient injury and death.